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Solution Introduction
This solution is developed based on the TI CC2530 chip, which is controlled via a smartphone app interface. It supports control from both Apple iOS and Android mobile devices, allowing multi-group lamp control, scene settings, brightness adjustment, RGB color restoration adjustment, and cloud management mode settings. It can replace the current market solutions for wireless lamp control technologies such as 433MHz, WiFi, and Bluetooth. Any LED lighting that follows the ZLL standard protocol can be compatible.
Main Performance Indicators of the ZigBee Smart Bulb Solution:
1. Remote control distance: 30m
2. Remote control method: Smart phone with WiFi [Apple iOS, Google Android] remote control
3. Operation method: APP interface operation
4. Connection protocol: WiFi, ZigBee
5. Control mode: Brightness adjustment, RGB color adjustment, scene setting
Principle Block Diagram of the ZigBee Smart Bulb Solution:
1. One DC power supply provides power to the constant current driver IC, and another supplies power to the CC2530 chip via LDO; 2. The CC2530 chip outputs four PWM signals to control the output current of the constant current driver IC; 3. The constant current driver IC controls the output of a constant current to drive the LED light; 4. The CC2530 chip controls the output of four PWM signals via the ZLL wireless network, thus controlling the output current of the constant current driver IC to drive RGBW LEDs and synthesize different color effects;
Difficulties in ZigBee Lighting Control Solution Design
Software part:
The software controls the LED colors, but due to the lack of professional calibration tools, it is difficult to adjust when color deviations occur; solution: By analyzing the parameter relationship diagram of the LED chips, appropriate compensation is made through software for each parameter;
Hardware part:
1. The shape of the bulb must primarily consider the customer’s first impression, as well as the actual heat dissipation effect, disassembly difficulty, and process costs. This solution aims to balance these aspects.
2. Circuit design: In previous years, the industry used constant voltage to control LEDs, which accelerated LED aging due to their inherent characteristics. The final solution adopted constant current control, setting an upper limit for the maximum current flowing through each LED chip.
3. RGBW color matching: This is based on the light flux ratio of RGB 3:6:1 to select the number of devices or control current, which is closely related to LED selection. It is essential to consider the main wavelengths R: 615-620NM, G: 530-540nm, B: 460-470nm. Additionally, to improve color rendering (color authenticity), yellow light (580nm) can be added. Different layouts and multiple tests with various LEDs are required to finalize the design.
Seeing is Believing
Video: ZLL Light Demo Videohttp://v.youku.com/v_show/id_XNjY1NzczNTY4.html
信驰达科技推出最新ZigBee Light link灯控方案，此方案是基于TI CC2530设计，并遵循ZLL协议，客户利用此方案开发产品可与其他厂家产品有更好的互操作性。本次就拍摄了简短的ZLL灯控Demo演示视频，供参考。
Limited Time Download: Follow us on “Microcontroller“, reply “Tutorial” to get the microcontroller e-book, reply “Simulation” to get Proteus simulation materials.
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